package io.datajek.spring.basics.movierecommendersystem.lesson9;


import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;

@SpringBootApplication
public class MovieRecommenderSystemApplication {

    public static void main(String[] args) {

        //ApplicationContext负责管理Bean和依赖关系。
        ApplicationContext appContext = SpringApplication.run(MovieRecommenderSystemApplication.class, args);

        //从ApplicationContext中获得并打印Single Bean
        ContentBasedFilter filter = appContext.getBean(ContentBasedFilter.class);
        System.out.println("\nContentBasedFilter bean with singleton scope");
        System.out.println(filter);

        //从Singleton Bean中获得并打印Prototype Bean两次
        Movie movie1 = filter.getMovie();
        Movie movie2 = filter.getMovie();
        Movie movie3 = filter.getMovie();

        System.out.println("\nMovie bean with prototype scope");
        System.out.println(movie1);
        System.out.println(movie2);
        System.out.println(movie3);

        //打印每种Bean的实例数
        System.out.println("\nContentBasedFilter instances created: "+ ContentBasedFilter.getInstances());
        System.out.println("Movie instances created: "+ Movie.getInstances());
    }
}